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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 6638894 | Devices and systems based on novel superconducting material A class of superconductive materials containing copper-oxygen bonding and with mixed cation-occupancy designed with a view to size and valence consideration yield useful values of critical temperature and other properties. Uses entail all applications whi... | 10/28/2003 |
| 6635603 | Devices and systems based on novel superconducting material A class of superconductive materials containing copper-oxygen bonding and with mixed cation-occupancy designed with a view to size and valence consideration yield useful values of critical temperature and other properties. Uses entail all applications whi... | 10/21/2003 |
| 6635368 | HTS film-based electronic device characterized by low ELF and white noise A film-based HTS device comprises a substrate and a superconducting film. A peripheral portion of the film is a-axis-aligned material which is so situated on the substrate as to describe a-b planar barriers which are perpendicular to the substrate and whi... | 10/21/2003 |
| 6630425 | Devices and systems based on novel superconducting material Superconducting copper oxides of the perovskite structure are modified to have mixed occupancy of a cation site, thereby resulting in increased limits in critical field and/or critical current. Mixed occupancy may be observed in terms of increased resisti... | 10/07/2003 |
| 6624122 | High critical current superconducting tapes Improvements in critical current capacity for superconducting film structures are disclosed and include the use of a superconducting RE-BCO layer including a mixture of rare earth metals, e.g., yttrium and europium, where the ratio of yttrium to europium ... | 09/23/2003 |
| 6605569 | Mg-doped high-temperature superconductor having low superconducting anisotropy and method for producing the superconductor A Mg-doped high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure constituted by a charge reservoir layer and a superconducting layer, wherein some or all atoms constituting the charge reservoir ... | 08/12/2003 |
| 6586370 | Metal boride based superconducting composite The invention provides a superconductor comprising particles made of a metallic boride superconductive material, and a conductive material. The conductive material is selected to be driven to a superconductive state when in proximity to the superconductiv... | 07/01/2003 |
| 6573220 | Superconductor with enhanced current density and method for making such a superconductor The present invention concerns an enhancement of the supercurrent carrying capabilities of bicrystalline or polycrystalline high-Tc superconductors, i.e. the critical current densities in such superconductors. The current transport properties a... | 06/03/2003 |
| 6537949 | Oxide superconductor and method for producing same An Hg- or Nd-based oxide superconductor comprises Ba as a constituent element and has a content of carbon as an impurity at a level of not greater than 2.0 atomic % whereby the oxide superconductor stably shows high superconducting characteristics without... | 03/25/2003 |
| 6482775 | Oxide superconductor An oxide superconductor consisting of an oxide which comprises, as constituent metal elements, bismuth, lead, strontium, calcium and copper having a molar ratio of lead to bismuth of at least 0.2:1, and having an internal structure in which domains having... | 11/19/2002 |
| 6444620 | High temperature superconductor having low superconducting anisotropy and method for producing the superconductor A high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure of crystal unit cells each consisting of a pair of superconducting layer and charge reservoir layer. At least a portion of the atoms of th... | 09/03/2002 |
| 6420318 | Ceramic superconductor/metal composite materials employing the superconducting proximity effect Superconducting composite materials having particles of superconducting material disposed in a metal matrix material with a high electron-boson coupling coefficient (λ). The superconducting particles can comprise any type of superconductor including Lave... | 07/16/2002 |
| 6413624 | Oxide superconductor and process for producing same An oxide superconductor is capable of assuring a high trapped magnetic field and maintaining its performance for a long period of time without being affected by internal or external forces, such as thermal strain or by corrosive environments. The oxide su... | 07/02/2002 |
| 6395685 | Thin film Hg-based superconductors, thermoelectric materials and methods of fabrication thereof Improved Hg-containing superconducting films and thermoelectric materials are provided. The films are fabricated by annealing starting Tl-containing films (e.g., Tl-1212 or Tl-2212) in an Hg-vapor environment so as to cause a substitution of Tl by Hg with... | 05/28/2002 |
| 6383989 | Architecture for high critical current superconducting tapes Improvements in critical current capacity for superconducting film structures are disclosed and include the use of, e.g., multilayer YBCO structures where individual YBCO layers are separated by a layer of an insulating material such as CeO2 an... | 05/07/2002 |
| 6365553 | Oxide superconductor having excellent crack-resistant property and process of producing same The invention provides an oxide superconductor capable of sufficiently withstanding external forces such as a large electromagnetic force and thermal stresses accompanying rapid heating and cooling while in service, and internal stresses so as to be able ... | 04/02/2002 |
| 6300284 | Copper-based high-temperature superconducting material A copper-based high-temperature superconducting material includes a carrier supply layer overdoped with carriers; and a superconducting layer comprised of at least three CuO2 layers that are selectively doped with the carriers; whereby a high s... | 10/09/2001 |
| 6291402 | Method of making a superconductive oxide body Some mechanical, electrical, and thermal properties of high Tc superconductors such as (Ba, Y) cuprates can be substantially improved by the dispersal of an appropriate metal in the superconductive body. For instance, mixing Ag particles with s... | 09/18/2001 |
| 6281171 | MG-doped high-temperature superconductor having the superconducting anisotropy and method for producing the superconductor A Mg-doped high-temperature superconductor having low superconducting anisotropy includes a two-dimensional layered structure constituted by a charge reservoir layer and a superconducting layer, wherein some or all atoms constituting the charge reservoir ... | 08/28/2001 |
| 6275716 | High critical temperature superconductors in the system La3-ZMezBa3Ca1-vNcvCu7O16+x where Me=a rare earth or alkaline metal ion and Nc is a Mg, Cd ion Compounds of the of the general formula La3-z Mez Ba3 Ca1-v Ncv Cu7 O16+x, wherein Me can be a rare earth metal or an alkaline metal ion selected from the group consisting of ytt... | 08/14/2001 |
| 6255255 | Oxide superconducting material and method of producing the same An oxide superconducting material includes a REBa2 Cu3 O7-x phase (RE designating one or a combination of two or more rare earth elements including Y), particles composed of Ce, Ba, Cu and O dispersed therein, and RE2... | 07/03/2001 |
| 6251530 | Thin-film of a high-temperature superconductor compound and method A thin-film of a high temperature superconducting compound having the formula M1-x CuO2-y, where M is Ca, Sr, or Ba, or combinations thereof, x is 0.05 to 0.3, and x>y. The thin film has a Tc (zero resistivity) of about 40... | 06/26/2001 |
| 6239080 | Ba-Ca-Cu-O compositions superconducting at up to 126K and methods for making same A material having a superconducting transition temperature (Tc) of 126 K under ambient pressure has been identified. The superconducting material belongs to a Ba--Ca--Cu--O compound family where the cation ratio of Ba:Ca:Cu is 2:2.5+0.5:3.5&#b1... | 05/29/2001 |
| 6218341 | Process for the preparation of a high temperature superconductor A process for preparing a superconductor which is a low anisotropy, high temperature superconductor, includes providing a target in molded form comprised of one of the superconductor or constituent elements of the superconductor, the superconductor having... | 04/17/2001 |
| 6136756 | Method for manufacturing of high temperature superconductor material The high temperature superconducting material is made from a base material having two opposing surfaces and including a high purity yttrium barium copper oxide compound having a YBa2 Cu3 O7-x (123) composition with silver ... | 10/24/2000 |
| 6121207 | Metal oxide materials The invention provides certain novel metal oxide materials which exhibit superconductivity at elevated temperatures and/or which are useful in electrode, electrolyte, cell and sensor applications, or as electrochemical catalysts. The metal oxide materials... | 09/19/2000 |
| 6103670 | Method of manufacturing oxide superconductor containing Ag and having substantially same crystal orientation An oxide superconductor which has high mechanical strength and exhibits favorable magnetic properties and high resistance to environment. Further, a method of manufacturing this oxide superconductor, namely, a method of manufacturing a RE--Ba--Cu--O oxide... | 08/15/2000 |
| 6080703 | Method of making TIBiBaCaCuO based superconductors A method for producing a high temperature superconductor system having the composition TlBiBaCaCuO. The system exhibits a Tc of at least 116 K. The method includes the steps of mixing compounds including Tl, Bi, Ba, Ca, Cu, and O to create a mi... | 06/27/2000 |
| 6063736 | Oxide superconductor of high critical current density There is provided RE-Ba-Cu-O oxide bulk superconductors in which considerably high critical current density is obtained at relatively high temperature. In the present RE-Ba-Cu-O bulk superconductors, RE is a combination of two or more elements selected fr... | 05/16/2000 |
| 6011982 | High critical temperature superconductor antenna comprising La3-z Mez Ba3 Ca1-v Ncv Cu7 O16+x where ME = a rare earth or alkaline metal and Nc is a Mg, Cd ion Compounds of the of the general formula La3-z Mez Ba3 Ca1-v Ncv Cu7 O16+x, wherein Me can be a rare earth metal or an alkaline metal ion selected from the group consisting of ytt... | 01/04/2000 |
| 6010982 | Sodium-intervened superconductor and its manufacturing method The present invention relates to a sodium-intervened superconductor and its manufacturing method and more particularly, to the sodium-intervened superconductor expressed by the following Formula 1 and its manufacturing method, wherein the superconductor, ... | 01/04/2000 |
| 5998336 | Ceramic/metal and A15/metal superconducting composite materials exploiting the superconducting proximity effect and method of making the same A composite superconducting material made of coated particles of ceramic superconducting material and a metal matrix material. The metal matrix material fills the regions between the coated particles. The coating material is a material that is chemically ... | 12/07/1999 |
| 5998338 | Method for preparing oxide superconductors There is provided a method for stably preparing rare earth (RE) 123 type oxide superconductors exhibiting outstanding superconductive properties in the atmosphere. In the method for preparing RE 123-type oxide superconductors by melting, cooling and solid... | 12/07/1999 |
| 5981442 | Neodymium-barium-copper-oxide bulk superconductor and process for producing the same An Nd-Ba-Cu-O bulk superconductor includes oxide including metallic elements of neodymium (Nd), barium (Ba) and copper (Cu), and has a structure in which fine particles of Nd4 Ba2 Cu2 O10 (i.e., Nd422) are dispe... | 11/09/1999 |
| 5972845 | High critical temperature superconductors in the system La3-z . Me.subz Ba3 Ca1-v Ncv Cu7 O16+x where Me=a rare earth or alkaline metal ION and Nc is a Mg, Cd ION Compounds of the of the general formula La3-z Mez Ba3 Ca1-v Ncv Cu7 O16+x, wherein Me can be a rare earth metal or an alkaline metal ion selected from the group consisting of ytt... | 10/26/1999 |
| 5968878 | Oxide superconductor and method of producing same A high critical temperature and high critical current density superconductor containing a matrix phase of a metal oxide expressed by the formula RE1 Ba2 Cu3 Op wherein RE1 stands for La, Nd, Sm, Eu or... | 10/19/1999 |
| 5958842 | Melt processing of Bi--2212 superconductors using alumina Superconducting articles and a method of forming them, where the superconducting phase of an article is Bi2 Sr2 CaCu2 Oy (Bi-2212). Alumina is combined with Bi-2212 powder or Bi-2212 precursor powder and, in ord... | 09/28/1999 |
| 5958840 | Oxide superconductor containing Ag and having substantially same crystal orientation, and method for manufacturing the same An oxide superconductor which has high mechanical strength and exhibits favorable magnetic properties and high resistance to environment. Further, a method of manufacturing this oxide superconductor, namely, a method of manufacturing a RE--Ba--Cu--O oxide... | 09/28/1999 |
| 5952268 | Superconductor material and a method of preparing superconductor materials The present invention relates to method of preparing a superconductor material consisting in preparing a precursor constituted by a powder of Ba2 Can-1 Cun+1 Ox or Ba2 Can-1 Cun+1 ... | 09/14/1999 |
| 5919735 | High temperature superconductor A high temperature superconductor which has a layered crystal structure, which has a superconducting transition temperature, Tc, of 110 K or more, and which has a composition expressed by: Cu1-z M'z Ae2 Cax-1 Cu... | 07/06/1999 |
